638632411034 has 16 divisors (see below), whose sum is σ = 973176507072. Its totient is φ = 314269498848.

The previous prime is 638632410971. The next prime is 638632411037. The reversal of 638632411034 is 430114236836.

It is a junction number, because it is equal to n+sod(n) for n = 638632410982 and 638632411000.

It is not an unprimeable number, because it can be changed into a prime (638632411037) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7270379 + ... + 7357694.

It is an arithmetic number, because the mean of its divisors is an integer number (60823531692).

Almost surely, 2^638632411034 is an apocalyptic number.

638632411034 is a deficient number, since it is larger than the sum of its proper divisors (334544096038).

638632411034 is a wasteful number, since it uses less digits than its factorization.

638632411034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14628421.

The product of its (nonzero) digits is 248832, while the sum is 41.

The spelling of 638632411034 in words is "six hundred thirty-eight billion, six hundred thirty-two million, four hundred eleven thousand, thirty-four".